Description of problem: Heavy compilation task - compiling KDE3.5.5 via Konstruct at console (init 3), no X runnning. After a while, either (a) Lock-up. Cannot switch to other tty via Alt+F1-F4. No message captured by klogd or syslogd. OR (b) PC reboots automatically.(!) To date, occurence ratio is like (a) - 35 times. (b) - 15 times. Only twice has the console printed the following message before lock-up. ------------------------------------------------------------------- <not sure if there is anything above this because of lockup> CPU:1 EIP: oo60[<c041a59a>] Tainted:P VLI EFLAGS: 00010094 (2.6.18-1.2798.fc6 #1) EIP is at resched_task +0x11/0x5f <....snip...> Process cc1plus (pid: 5509, ti=cdc47000 task=dfea6070 task.ti=cdc47000) <...snip stack hex stuff...> Call Trace: [<c041ae55>] try_to_wake_up +0x361/0x38b [<c04328d5>] autoremove_wake_function +0x15/0x35 [<c0419576>] __wake_up_common +0x2f/0x53 [<c04a371>] __wake_up +0x2u/0x3d [<c0475e3b>] pipe_writev +0x393/0x411 [<c0475ed9>] pipe_write +0x20/0x24 [<c046b6f1>] vfs_write +0xa8/0x15f [<c046bd2c>] sys_write +0x41/0x67 [<c0404027>] syscall_call +0x7/0xb DWARF2 unwinder stuck at syscall_call +0x7/0xb <...snip leftover inexact backtrace...> ------------------------------------------------------------ Version-Release number of selected component (if applicable): FC6 core, default kernel 2.6.18-1.2798.fc6. Gigabyte GA-945GM-S2 (Intel 945G+ ICH7 chipset) Intel Core 2 Duo E6300 How reproducible: Everytime. Steps to Reproduce: 1. Obtain Konstruct from http://developer.kde.org/build/konstruct/stable/ konstruct-stable.tar.bz2 2. Edit gar.conf.mk to suit the platform. 3. cd meta/kdepim-crypto and make install. Additional info: I have not tested fc6 daily usage at all - just trying to test a shiny new core 2 duo performance by giving it a big compilation task. :P Maybe this is reproducible for any big enough compilation task. Have tested memory with memtest - no problems. Tried swapping around memory modules. Checked CPU temperature at bios after a lockup or auto-reboot - remained in the 35-40+ degrees range. Tried passing maxcpus=1 to kernel at boot. Tried many enabling/disabling various bios options. Problem still persists. klogd is running at the fc6 default of klogd -x. Have edited syslogd.conf to log kernel messages to /var/log/kernel - but nothing useful captured.
problems with binary modules loaded aren't debuggable.